Hephaestus is the Greek god of fire and blacksmiths. He was born to Zeus and to Hera. When he was born, Hera and Zeus saw that he was lame and they cast him off Mount Olympus. He landed on an island or in the ocean, depending on the version. He then made a throne, after settling in his new volcano home, which was designed to trap Hera in revenge. He succeeded, and the gods and goddesses pleaded with him to let her go. He decided to, but only when he was tricked by Dionysus. This eventually ended up with him marrying Aphrodite and becoming the Greek god of blacksmith and fire.
Hephaestus is clever, an expert, and industrious. The reasons why is he is clever when making objects that are strong enough to keep a god or goddess trapped. He is and expert blacksmith and creator. Ron Leadbetter says that "Hephaestus, the god of fire, especially the blacksmith's fire, was the patron of all craftsmen, principally those working with metals"(Leadbetter Encyclopedia Mythica. Hephaestus). He is also industrious because he is hardworking and gets work done.
Hephaestus' Myth shows high intelligence, which is highly valued in the Greeks everyday life. He has high intelligence when he devises a plan and then builds the materials necessary for the plan. It shows that his intelligence is admired in the end of the myth which leads to him becoming a god. His Myth says "Hephaestus accomplished numerous prodigies of craftsmanship, such as the marvelous palaces that he built for the gods atop Mount Olympus, or the armor that he made for Achilles during the siege of Troy"(Mythweb).
Hephaestus' is just as powerful as Zeus or Poseidon because while they control the elements of air and water respectively, while Hephaestus controls the element of fire, has high intelligence and can use his power of blacksmith and his own knowledge/experience to build it on his own.